outer, which is connected with it at the base by a membrane; claws long, curved, roundish, very acute.
Plumage ordinary compact. Feathers of the head and neck narrow, of the back broad and rounded, of the breast oblong. Tibial feathers elongated externally. Space between the bill and eye covered with bristly feathers. Orbital spaces, and projecting edge of eyebrow bare. Wings nearly as long as the tail; the primary quills narrow and tapering, the second longest; the secondary quills short and rounded. Tail longish, nearly even.
Bill bluish-black above, yellow beneath. Cere, orbits and eyebrow greenish-yellow. Iris hazel. Feet pale orange. The general colour of the upper parts is light bluish-grey, darker on the head and wings, each feather with a black line along the shaft. Quills brownish-black. Tail marked with alternate broad bands of light ash-grey and brownish-black, the last black band much broader, the feathers tipped with white. Chin and throat yellowish-white; sides of the neck light yellowish-red, streaked with dark brown; lower part of the fore neck, the whole of the breast, and the sides, yellowish-white, with large spots of brown. Abdomen and under tail-coverts brownish-white; tibial feathers light reddish, each with a central line of blackish-brown.
Length l04/3 inches; bill along the back 2/3; tarsus 11/2, middle toe 17/12.